Boring device



1942- E. L. TIBBALS, JR, ETAL 3 L BORING DEVICE Filed Nov. 15, 1941 vINVENTORS ATTORNEYS Patented Nov. 10, 1942 "UNITED STATES PA'I anTOFFICE 7 BORING DEVICE Edwin L. Tibbals, In, and John W. Boomer, Sn,

Pontiac, Mich. Application November 15, 1941, Serial No. 419,356 4Claims. (01; 25542) I This invention relates to boring devices, and itsgeneral object is to provide a device in the formof an auger, that isprimarily designed for boring through ice what is commonly known as afishing hole, the device being operable with minimum efiort' on the partof the user, and is capable of boring a hole of relatively'largediameter through ice of various thicknesses, without cracking orotherwise weakening the ice adjacent the hole, thus the adjacent iceprovides ample supporting means for a shelter or windbreak about thehole, for protection While fishing.

A further object is to provide a boring device thatis capable ofperforming its intended function in an easy and expeditious manner, andis foldable for convenience in carrying and for taking up minimum spacein storage.

Another object is to provide a boring device that is simple inconstruction, inexpensive to manufacture, and extremely efficient inoperation, use and service.

This invention also consists in certain other features of constructionand inthe combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claims.

In describing .the invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which: 7 VFigure 1 is a sectional view taken approximately on line I-l of Figure2, looking in the direction of the arrows.

Figure 2 is a sectional view taken approximately on line 2-2 of Figure1, looking in the direction of the arrows, and illustrates the leggedsupporting means in operative position in full lines and in partiallyfolded positionin dotted lines.

Figure 3 is a sectional view taken approximately on line'3- -3 of Figure2, looking in the direction of the arrows.

Referring to the drawing in detail, the reference numeral l indicates adisk shaped platform having secured thereto and rising therefrom thearms 2 of an inverted substantially U-shaped frame 3, the arms beingprovided with diametrically opposite bearings 4 which have mounted forrotation therein, a drive shaft 5 of a length to extend a considerabledistance laterally of one of the arms, and the extending end of theshaft has secured thereto a crank handle 6 that is provided with a handgrip I.

The shaft is held in the bearings 4 by a retaining collar 8 and the hub9 of a beveled gear ID. that meshes with a beveled gear or pinion l Ihaving a hub I2 provided with-a reduced portion seated for rotation in abearing collar I3 formed centrallyof and through the platform I, as bestshown in Figure 2.

Securedto and depending from the gear H is a square cornered shaft l4having an abutment pin I5 extending transversely therethrough adjacentits lower end, to limit the, downward movement of a disk like relativelythick heavy head I6 of a hollow cylindrical cutting element ll, the headbeing slidably mounted on the shaft I4 and provided with a centralsquare cornered hole fittingl receiving the shaft, for that purpose. Thehead is also provided with a reduced lower portion providing an annularshoulder, and the upper end of the cutting element I! is mounted on thereduced portion of the'head, in bearing engagement with the shoulder, aswell as is secured in place by set screws; I8, for the head to carry thecutting element, for normal downward movement under the action ofgravity, as will be apparent upon inspection of Figure 2. The lower endof the cutting element is notched about the entire periphery thereof toprovide V-shaped cutting teeth l9.

The supporting means in the form shown includes three legs 20 of crosssectional V-shape for the major portion of their length and the upperends of the legs terminate in flat portions 2| to which aresecured oneofthe leaves of barrel type hinges 22, while the other leaves of thehinges are secured to the under face of the platform for disposal of thelegs at equidistantly spaced relation about the periphery of theplatform for pivotal or hinged association therewith.

The lower ends of the legs are beveled to provide penetrating points 23,and formed on and extending inwardly from each of the legs is a pair ofspaced apertured ears 24 having mounted between the same and pivotedthereto, one of the ends of brace links 25. The opposite or inner endsof the brace links are mounted between and pivoted to ears 26 that areformed on and extend outwardly in equidistantly spaced relation to eachother, from a centering ring 21 for the cutting element IT. The elementI1 is mounted in the ring for slidable movement, and of course forslidable movement of the ring on the cutting element, to allow thesupporting means to be folded as indicated in Figure 2, for conveniencein carrying the device and to take up minimum space in storage.

A stop member 28 is secured to the cutting elethrough the ice A.However, the dotted line position of the supporting means in Figure 2illus-- trates the manner of folding the same, as the supporting meansremains in the full line posi- 3 tion during the entire time the deviceis in is performing its cutting function.

From the above description and disclosure in the drawing, it is believedthat the use of our device will be obvious, but it might be mentionedthat the device is set up on the ice A, as shown in full lines in Figure2, with'the teeth in bearing engagement with the icel Upon rotation ofthe cutting element, by the crank handle and through the medium of thegears, shafts and heads IE, the teeth will penetrate the ice and be fedtherethrough by the action of gravity due to the weight of the head,thus the device will cut a circular hole through the ice for the passageof fishing lines, as will be apparent. However, the

device can be used for boring holes through any 1 material and shouldprove very efficient as a post hole auger.

It is thought from the foregoing description that the advantages andnovel'features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall within the scope of the appended claims.

What we claim is:

1. A boring device comprising a platform, a shaft journaled in theplatform and depending therefrom, cutting means including a head mountedfor vertical slidable movement on the shaft and against rotationrelative thereto, a cutting element fixed to and depending from thehead, cutting teeth formed on the lower end of said element, means forrotating the shaft to bring about rotary movement of the cuttingelement, legs pivotally secured to and depending from the platform,centering means for and surrounding the cutting element, and brace meansfor the legs and pivoted thereto and to the centering means.

2. A boring device comprising a platform, a frame including parallelarms secured to and rising from the platform, a shaft journaled in theplatform and depending therefrom, cutting means including a head mountedfor vertical slidable movement on the shaft and against'rotationrelative thereto, a hollow cylindrical cutting element fixed to anddepending from the head, cut-- ting teeth formed on the lower end ofsaid element, a drive shaft mounted for rotation in and bridging saidarms, said drive shaft being geared to the first shaft to bring aboutrotary movement of the cutting element, means for rotating the driveshaft, supporting legs secured to and depending from the platform,centering means for and surrounding the cutting element, and brace meansfor the legs and connected thereto and to the centering 'means.

3. A boring device comprising a platform, a frame including parallelarms secured to and rising from the platform, a bearing collar centrallyformed on the platform, a gear including a hub sectional square corneredshaft fixed to and depending from the gear, cutting means including ahead having a square cornered hole therethrough fittingly receiving theshaft for slidable movement of the head thereon, ahollow cylindricalcutting element detachably secured to and depending from the head,cutting teeth formed on the lower end of said element, a drive shaftrotatably mounted in and through said arms, a gear secured to the driveshaft and meshing with the first gear to bring about rotary movement ofthe cutting element, a crank handle secured to the drive shaft, meanarranged in the path of the head to limit downward movement of thecutting means, and supporting legs secured to and depending from theplatform.

l. A boring device comprising a platform, a frame including parallelarms secured to and rising from the platform, a bearing collar centrallyformed on the platform, a gear including a hub mounted for rotation inthe bearing collar, a cross sectional square cornered shaft secured toand depending from the gear, cutting means including a disk likerelatively thick heavy head having a centrally arranged square corneredhole therethroughfittingly receiving the shaft for slidable movement ofthe head thereon, said head having a reduced lower portion providing ashoulder, 'a hollow cylindrical cutting element detachably secured tothe reduced portion and bearing against the shoulder, cutting teethformed "on the lower end of said element, a handled drive shaft mountedfor rotation in said arms for disposal in bridging relation thereto, agear on said-drive shaft and meshing with the first gear tobring aboutrotary movement of the cutting element, legs pivotally secured to anddepending from the platform, a ring surrounding the-cutting element forslidable movement thereon, brace links having their ends pivotallyconnected to the ring and legs respectively, said legs having-beveledlower ends providing penetrating points, and means arranged in the pathof the ring to limit downward movement thereof. 3

a 'EDWIN L. TIBBALS, JR;

JOHN W. BOOMERQSR.

